CN104334918A - Element for metallic belt - Google Patents
Element for metallic belt Download PDFInfo
- Publication number
- CN104334918A CN104334918A CN201380029179.7A CN201380029179A CN104334918A CN 104334918 A CN104334918 A CN 104334918A CN 201380029179 A CN201380029179 A CN 201380029179A CN 104334918 A CN104334918 A CN 104334918A
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- China
- Prior art keywords
- belt wheel
- pulley
- metal tape
- projection piece
- belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
- F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
- F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
- F16H9/18—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmissions By Endless Flexible Members (AREA)
- Pulleys (AREA)
Abstract
An element (40) for a metallic belt for a belt-type continuously variable transmission is configured in such a manner that the outer portions (46b) of the metallic belt (7) in the radial direction of the belt are formed in a rectilinear shape so that the outer portions (46b) are in linear contact with the inner portions (11a) of pulleys (5, 8) in the radial direction thereof, the inner portions (11a) being the tilted generating line portions of the pulleys (5, 8), the tilted generating line portions being tilted at a certain angle. Protrusions (48) extending inward in the radial direction of the belt are respectively provided at the lower ends of both side edges of the element (40) so as to be located below a rocking edge section (44a). The protrusions (48) are configured so as to deflect inward in the axial direction of the pulleys (5, 8) when the element (40) and the outer portions (11b) of the pulleys (5, 8) in the radial direction thereof are in contact with each other, the outer portions (11b) being the curved generating line portions of the pulleys (5, 8).
Description
Technical field
The present invention relates to be wound on stepless speed variator driving pulley and driven pulley on the element of metal tape.
Background technique
In the past, known by driving pulley, driven pulley and be wound on the variable v-belt drive (for example, referring to Japanese Unexamined Patent Publication 6-307510 publication) that the metal tape on these 2 belt wheels forms.
Fig. 7 shows the shifted by delta e of the length direction center line of when driving pulley 98 on the cross section making the central axis comprising driving pulley 98 and driven pulley 95 and driven pulley 95 and the surface of contact (hereinafter referred to as " V face ") of metal tape 97 are formed as straight line shape, on same cross section metal tape 97.As shown in Figure 7, gear ratio is changed to minimum (hypervelocity (OD) ratio) from maximum (low speed ratio) through middle (middle speed ratio), thus, metal tape 97 correspond to the width of the pulley groove of driving pulley 98 and driven pulley 95 change and to two belt wheels 98, the central axial direction of 95 moves, but because the amount of movement of metal tape 97 is different with driven pulley 95 side in driving pulley 98 side, therefore, there is shifted by delta e in the lateral direction in the length direction center line of metal tape 97, the direction 99 of metal tape 97 swings (skew of the length direction center line of this metal tape 97 being called " deflection ").
If cause the deflection of such metal tape, then can drive and driven pulley and metal tape surface of contact (V face) on there is partial wear, or cause the durability of metal tape to reduce because metal tape is distorted.
Therefore, in the technology of patent documentation 1, becoming large mode with the width of pulley groove sets larger than the angle of inclination of the bus of internal side diameter by the angle of inclination (angle relative to the plane of the central axis upright with belt wheel) of the bus of the outside diameter of belt wheel, the outside diameter of belt wheel and the boundary part of internal side diameter is made to be formed as level and smooth convex curve surface shape, about the main part lateral margin of the element of metal tape, also belt wheel is corresponded to, the angular setting of the outside diameter of metal tape is become the internal side diameter linear contact lay with belt wheel, the angular setting of the internal side diameter of metal tape is become the outside diameter linear contact lay with belt wheel, inhibit deflection.
In addition, in order to suppress deflection, also know the stepless speed variator (for example, referring to Japanese Unexamined Patent Publication 2002-31215 publication) making the bus from the internal side diameter of belt wheel to outside diameter be formed as level and smooth curve.
At first technical paper
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 6-307510 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2002-31215 publication
Summary of the invention
The problem that invention will solve
In the technology of patent documentation 1, make the convex curve surface shape that boundary part is formed as level and smooth, but, because the variable quantity of the angle of the bus of boundary part is comparatively large, therefore exist and be difficult to carry out the such problem of speed Control when element contacts with boundary part.
On the other hand, in patent documentation 2, the contact segment of belt wheel and element is point cantact, and therefore, under the path state that element contacts with the internal side diameter of belt wheel, the friction factor existed between element and belt wheel reduces such problem.
In view of above problem, the object of the present invention is to provide a kind of metal tape element of stepless speed variator, it can guarantee the frictional force between element under path state and belt wheel, and can reduce deflection.
For solving the means of problem
[1] to achieve these goals, the present invention is a kind of element of band, it is used to following variable v-belt drive, and this variable v-belt drive possesses: driving pulley and driven pulley, and they have the pulley groove limited by fixed side pulley half and drawer at movable side pulley half respectively, and band, it has element, and be wound in the pulley groove of this driving pulley and this driven pulley, described fixed side pulley half is formed with tilt fixing inclination bus part with the surface of contact contacted with described element of at least described fixed side pulley half in described drawer at movable side pulley half at its radially inner side, the bus of this tilt fixing inclination bus part to tilt fixing angle towards the mode that radial outside broadens with described pulley groove, the radial outside of described surface of contact is formed with bending bus part, the bus of this bending bus part to broaden and angle of inclination becomes large mode gradually towards radial outside bends towards radial outside gradually with described pulley groove, leave from the described fixed side pulley half of the belt wheel of this side by making the described drawer at movable side pulley half of the belt wheel of the side in described driving pulley and described driven pulley, the width of the pulley groove of this side is increased, by making the described drawer at movable side pulley half of the belt wheel of the opposing party in described driving pulley and described driven pulley close to the described fixed side pulley half of the belt wheel of this opposing party, the width of the pulley groove of this opposing party is reduced, thus change gear ratio, the feature of described element is, be formed with the locking edge edge contacted with adjacent element on the element, radial outside as the described band of the lateral margin of described element is formed as rectilinear form in the mode of the tilt fixing inclination bus wire portion line contact with described belt wheel, projection piece is respectively arranged with at the both side edges subordinate end of described element, described projection piece than described locking edge edge on the lower, and extend towards the inner side that band is radial, when the bending bus part contact of the radial outside of described element and described belt wheel, this projection piece bends inside the axial direction of described belt wheel.
According to the present invention, when band is wound in belt wheel with path, the part contact of the rectilinear form of the tilt fixing inclination bus part of belt wheel and the lateral margin of element, element and belt wheel become the state of linear contact lay.Therefore, according to the present invention, the reduction of the friction factor be with when being wound in belt wheel with path can be prevented.
In addition, when band is wound in belt wheel with large footpath, the lateral margin outside the width direction of projection piece bends the bending bus part contact with belt wheel.Thereby, it is possible to prevent the lateral margin lower end of element from contacting partly as in the past with belt wheel, the durability of element and belt wheel can be improved.
[2] in addition, in the present invention, preferably, the width of the band radial outside end of projection piece is set to the width of the regulation of the flexure allowing projection piece, and described projection piece is formed as becoming large gradually along with towards band radially inner side width.
According to this structure, the projection piece of deflection easily can be formed, and, owing to broadening gradually, therefore, it is possible to improve the durability of projection piece along with towards band radially inner side width.
[3] in addition, in the present invention, the lateral margin outside the width direction of projection piece can be formed as the rectilinear form of the elongation line of the rectilinear form of the lateral margin along element.According to this structure, what can make element extends to projection piece with the part of the tilt fixing inclination bus wire portion line contact of the radially inner side of belt wheel, thus can obtain higher frictional force.
[4] in addition, in the present invention, the lateral margin outside the width direction of projection piece also can be formed as the curved shape caved in inside width direction.According to this structure, in projection piece flexure and bending bus part contact with the radial outside of belt wheel time, the curved shape of projection piece and the bending bus wire portion of belt wheel divide easy linear contact lay, even if also can improve the frictional force with element at the radial outside of belt wheel.
[5] in addition, preferably, the radius of curvature of the curved shape of projection piece is more than the radius of curvature of bending bus part of belt wheel.According to this structure, when projection piece bends, the part of the curved shape of projection piece easily in wider scope with the bending bus wire portion line contact of belt wheel.Therefore, projection piece and the easy stably linear contact lay of belt wheel, can reduce face pressure, improve the durability of element and belt wheel.
Accompanying drawing explanation
Fig. 1 is the explanatory drawing of the stepless speed variator schematically showing the element employing the 1st mode of execution of the present invention.
Fig. 2 is the explanatory drawing of a part for the metal tape schematically showing the 1st mode of execution.
Fig. 3 is the explanatory drawing of the element that the 1st mode of execution is shown.
Fig. 4 illustrates the belt wheel of the 1st mode of execution and the explanatory drawing of element.
Fig. 5 is the explanatory drawing of the state of the metal tape illustrated on the belt wheel being wound on the 1st mode of execution.
Fig. 6 is the explanatory drawing of the element that the 2nd mode of execution of the present invention is shown.
Fig. 7 is the explanatory drawing of the deflection of the stepless speed variator illustrated in the past.
Embodiment
Referring to figs. 1 through Fig. 5, the 1st mode of execution of metal tape element of the present invention is described.Fig. 1 shows the overall structure of the variable v-belt drive 1 of the element of use the 1st mode of execution.Variable v-belt drive 1 is made up of following part: transmission input shaft 2, and it is connected via the output shaft of flywheel vibration absorber 10 with the motor ENG as driving source; Lay shaft 3, it is adapted to parallel with transmission input shaft 2; Metal tape mechanism 4, it is provided between these two axles 2,3; And forward-reverse switching mechanism 20, it is provided on transmission input shaft 2.Oil pressure pump 30 and speed change control valve 60 is provided with in this variable v-belt drive 1.Working oil is sent into speed change control valve 60 via oil circuit 30c by oil pressure pump 30.Speed change control valve 60 can adjust/control the oil pressure of the working oil sent into.Then, sent into metal tape mechanism 4 by the working oil after speed change control valve 60 pressure regulation by via oil circuit 30d, 30e, carry out the speed Control of variable v-belt drive 1 thus.
Metal tape mechanism 4 is made up of following part: by the driving pulley 5 be rotatably disposed on transmission input shaft 2; The driven pulley 8 on lay shaft 3 is disposed in the mode rotated integrally with lay shaft 3; And the metal tape 7 be wound on two belt wheels 5,8.
As shown in Figure 2, metal tape 7 is by connecting to multiple elements 40 of ring-type and being formed with two beam rings 50 that laminated arrangement is installed on this element 40.As shown in Figure 3, element 40 is formed as planar, and is made up of following part: head 41, and its ear 42 extends to the left and right; Main part 44, it extends to the left and right than ear 42; And neck 43, it connects this main part 44 and head 41.
A face of head 41 is formed with nostril 41a, is formed with the nose 41b in the nostril 41a that can insert adjacent element 40 on the other surface.Between adjacent element 40, make nose 41b be embedded in nostril 41a, the element 40 thus by adjacent is together connected to each other.
The locking edge edge 44a of broad ways extension is provided with at the upper section of main part 44, and, main part 44 possesses projection piece 48, this projection piece 48 is both side edges underparts of main part 44, and it extends downwards from the position than locking edge edge 44a (band radially inner side) on the lower.
Ring 50 be the endless metal belt of ring-type is radially stacked and form, it is configured in space that formed in the left and right of element 40, that limited by ear 42, neck 43 and main part 44, and is clamped by the upper limb (saddle face 45) of the lower edge of ear 42 and main part 44.Be formed with V face 46 at the left and right sides edge of the main part 44 containing projection piece 48, this V face 46 contacts with the V face 11 of driven pulley 8 with driving pulley 5 described later and is clamped.
Driving pulley 5 is made up of following part: fixed side pulley half 5A, and it is with rotatable and cannot the mode of movement vertically be provided on transmission input shaft 2; With drawer at movable side pulley half 5B, it can move axially relatively relative to this fixed side pulley half 5A.Be formed with driving side cylinder room 6 in the side of drawer at movable side pulley half 5B, by the oil pressure supplied via oil circuit 30d from speed change control valve 60, produce the end thrust (driving pulley end thrust) making drawer at movable side pulley half 5B movement vertically.Be formed with V face 11 in the part (surface of contact) contacted with metal tape 7 of fixed side pulley half 5A, be also formed with this V face 11 in the mode opposed with fixed side pulley half 5A at drawer at movable side pulley half 5B.Further, the V face 11 that metal tape 7 is formed on fixed side pulley half 5A and drawer at movable side pulley half 5B clamps.
Driven pulley 8 is made up of following part: fixed side pulley half 8A, and it is engaged and is disposed on lay shaft 3; With drawer at movable side pulley half 8B, it can move axially relatively relative to this fixed side pulley half 8A.Be formed with slave end cylinder room 9 in the side of drawer at movable side pulley half 8B, by the oil pressure supplied via oil circuit 30e from speed change control valve 60, produce the end thrust (driven pulley end thrust) making drawer at movable side pulley half 8B movement vertically.Driven pulley 8 has also been identically formed V face 11 with driving pulley 5, and the be fixed V face 11 of side pulley half 8A and drawer at movable side pulley half 8B of metal tape 7 clamps.
As shown in Figure 4, the belt wheel radial inside portion 11a in V face 11 is formed as tilt fixing inclination bus part, (wherein, θ is the angle of the plane relative to the central axis upright with belt wheel with the angle θ tilting fixing towards the mode that radial outside broadens at fixed side pulley half 5A, 8A and the pulley groove 5C, the 8C that limit between drawer at movable side pulley half 5B, 8B for the bus of this tilt fixing inclination bus part.)。The belt wheel radial outside portion 11b in V face 11 is formed as bending bus part, and the bus of this bending bus part is to broaden gradually towards radial outside pulley groove 5C, 8C and angle of inclination becomes large mode gradually bends.If θ '=θ, then as the contact range contacted with element 40, the angle of inclination of the most external diameter in V face 11 is θ '+Δ θ.
Band radial outside portion 46b as the V face 46 of the lateral margin of element 40 is the rectilinear form of the belt wheel radial inside portion 11a in V face 11 along the tilt fixing inclined-plane as belt wheel 5,8, and its angle of inclination is set to θ.Band radial inside portion 46a as the V face 46 of the lateral margin of projection piece 48 is the rectilinear form of the elongation line along the rectilinear form being with radial outside portion 46b, and its angle of inclination is set to θ equally.V face 46 is provided with the oil-discharge trough 47 that multiple thickness of slab direction along element 40 extends.
By speed change control valve 60, the oil pressure (belt wheel side pressure controls oil pressure) being supplied to driving side cylinder room 6 and slave end cylinder room 9 is controlled, thus, the belt shaft thrust (anti-slip axle thrust) that can not occur to skid on metal tape 7 can be set, and the belt wheel width of driving pulley 5 and driven pulley 8 can be set changeably.Thus, variable v-belt drive 1 can make metal tape 7 relative to the winding radius of two belt wheels 5,8 change continuously come infinitely (continuously) control gear ratio.
Forward-reverse switching mechanism 20 is made up of planetary gears PGS, forward clutch 24 and retrogressing break 25.Planetary gears PGS is the structure of the single planetary gear formula be made up of following part: the sun gear 21 be combined with transmission input shaft 2; The gear ring 23 be combined with fixed side pulley half 5A; And planet carrier 22, the small gear 22a axle engaged with sun gear 21 and gear ring 23 is supported to by it can freely rotation and revolution.
Retrogressing break 25 is configured to planet carrier 22 to be fixedly held in shell Ca.Forward clutch 24 is configured to link sun gear 21 and gear ring 23.When forward clutch 24 is engaged, sun gear 21, planet carrier 22 and gear ring 23 and transmission input shaft 2 rotate integratedly, and driving pulley 5 is driven by the direction (direction of advance) identical with transmission input shaft 2.On the other hand, when retrogressing break 25 is engaged, planet carrier 22 is fixed and held in shell Ca, and gear ring 23 is driven by the direction (direction of retreat) contrary with sun gear 21.
Further, planetary gears PGS also can be formed with dual planetary gear formula.In this case, as long as make fixed side pulley half 5A be combined with planet carrier and retrogressing break is arranged at gear ring.
The power of motor ENG is passed to lay shaft 3 via after metal tape mechanism 4, forward-reverse switching mechanism 20 speed change.The power being passed to lay shaft 3 is passed to box of tricks 29 via start clutch 26 and gear 27a, 27b, 28a, 28b, and is passed separately the wheel to not shown left and right from here.
As previously mentioned, utilize speed change control valve 60 to control to supply the oil pressure of driving side cylinder room 6 and slave end cylinder room 9, carry out speed Control, but the action control of speed change control valve 60 is according to the speed change control signal C from speed Control unit 70
dR, C
dNcome carry out.
Speed change control valve 60 is configured to have two solenoid valves, the oil pressure that these two electromagnetic valve supply to driving side cylinder room 6 and slave end cylinder room 9, and these solenoid valves are according to the speed change control signal C exported from speed Control unit 70
dR, C
dNcarry out action, thus carry out speed Control.Consequently, based on speed change control signal C
dR, C
dNset the oil pressure in two cylinder rooms 6,9, thus setting acts on driving and the driven pulley end thrust of driving pulley 5 and driven pulley 8.
In order to carry out this speed Control, detect engine revolution signal Ne, engine air throttle opening amount signal T
h, vehicle speed signal V, the driving pulley rotation signal NDR obtained by driving side revolution detector 71 and the driven pulley rotation signal NDN obtained by slave end revolution detector 72, and these signals are inputed to speed Control unit 70.
The shape of the bus of the belt wheel radial inside portion 11a in the V face 11 of belt wheel 5,8 is made to be that straight line is formed as tilt fixing inclined-plane, the band radial outside portion 46b in the V face 46 of element 40 is made to be formed as the rectilinear form of the tilt fixing plane of inclination of the belt wheel radial inside portion 11a along belt wheel 5,8, thus, fully can guarantee the coefficientoffrictionμ between belt wheel 5,8 and metal tape 7, thus metal tape 7 can be prevented relative to the skidding of belt wheel 5,8.Below, its reason is described.
Coefficientoffrictionμ between the V face 11 of belt wheel 5,8 and the V face 46 of element 40 is not fixed, and when V face 11 and V face 46 linear contact lay, coefficientoffrictionμ becomes large, and when V face 11 and V face 46 point cantact, coefficientoffrictionμ diminishes.
This is because belt wheel 5,8 and metal tape 7 also non-direct contact, accompany the reaction film (boundary film) produced by the additive in lubricant oil in its contact segment.If V face 11 and V face 46 are point cantact, then compared with the situation of linear contact lay, the area of contact segment diminishes, and the shear strength of the oil film therefore between V face 11 and V face 46 diminishes, and coefficientoffrictionμ reduces.On the other hand, if V face 11 and V face 46 are linear contact lay, then compared with the situation of point cantact, the area of contact segment becomes large, and therefore, the shear strength of the oil film between V face 11 and V face 46 becomes greatly, and coefficientoffrictionμ increases.
Like this, shape in the belt wheel radial inside portion 11a in V face 11 and belt wheel radial outside portion 11b, bus is that the belt wheel radial inside portion 11a of straight line and the band radial outside portion 46b linear contact lay in V face 46 make coefficientoffrictionμ raise, and the shape of bus is that the belt wheel radial outside portion 11b of curve and the band radial inside portion 46a point cantact in V face 46 make coefficientoffrictionμ reduce.
Fig. 5 (A) is the figure of the state of metal tape 7 when illustrating that gear ratio i is low, and the winding radius of metal tape 7 diminishes in driving pulley 5 side, becomes large in driven pulley 8 side.Therefore, the quantity of the element 40 engaged with driving pulley 5 becomes fewer than the quantity of the element 40 engaged with driven pulley 8.
In addition, the frictional force born according to each element 40, the quantity of element 40 engaged with belt wheel 5,8 and obtain transmitting torque from axis to the long-pending of the distance of winding position, but, in driving pulley 5 side, the quantity of the element 40 engaged with driving pulley 5 and all less to the distance of winding position from axis, the frictional force that therefore each element 40 is born becomes large.On the other hand, in driven pulley 8 side, the quantity of the element 40 engaged with driven pulley 8 and all comparatively large to the distance of winding position from axis, the frictional force that therefore each element 40 is born diminishes.
Therefore, whether the coefficientoffrictionμ that depend on whether fully ensure that the belt wheel radial inside portion 11a of driving pulley 5 and element 40 between, the coefficientoffrictionμ between the belt wheel radial outside portion 11b of driven pulley 8 and element 40 has an impact hardly if skidding between belt wheel 5,8 and metal tape 7.
In the present embodiment, the shape of the bus of the belt wheel radial inside portion 11a of driving pulley 5 is formed with straight line, and, the band radial outside portion 46b in V face 46 and make coefficientoffrictionμ become greatly, therefore, it is possible to reliably prevent metal tape 7 from skidding as the band radial inside portion 46a of the lateral margin of projection piece 48 and the belt wheel radial inside portion 11a linear contact lay of driving pulley 5.In addition, even if in order to compensate deflection with curve to form the shape of the bus of the belt wheel radial outside portion 11b of driving pulley 5, but due to the frictional force born at each element 40 of side, large footpath less, therefore metal tape 7 can not skid.
Fig. 5 (B) is the figure of the state of metal tape 7 when illustrating that gear ratio i is OD, and the winding radius of metal tape 7 diminishes in driven pulley 8 side, becomes large in driving pulley 5 side.Therefore, the quantity of the element 40 engaged with the driven pulley 8 of path side becomes fewer than the quantity of the element 40 engaged with the driving pulley 5 of side, large footpath.
In addition, the frictional force born according to each element 40, the quantity of element 40 engaged with belt wheel 5,8 and obtain transmitting torque from axis to the long-pending of the distance of winding position, but, in driven pulley 8 side, the quantity of the element 40 engaged with driven pulley 8 and all less to the distance of winding position from axis, the frictional force that therefore each element 40 is born becomes large.On the other hand, in driving pulley 5 side, the quantity of the element 40 engaged with driving pulley 5 and all comparatively large to the distance of winding position from axis, the frictional force that therefore each element 40 is born diminishes.
Therefore, the coefficientoffrictionμ whether skidded between the belt wheel radial inside portion 11a depending on the driven pulley 8 that ensure that path side whether fully and element 40 between belt wheel 5,8 and metal tape 7, the coefficientoffrictionμ between the belt wheel radial outside portion 11b of driving pulley 5 and element 40 has an impact hardly.
In the present embodiment, the shape of the bus of the belt wheel radial inside portion 11a of driven pulley 8 is formed with straight line, and, the band radial outside portion 46b in V face 46 and the belt wheel radial inside portion 11a linear contact lay of driven pulley 8 and make coefficientoffrictionμ become greatly, therefore, it is possible to reliably prevent the skidding of metal tape 7.In addition, even if in order to compensate deflection with curve to form the shape of the bus of the belt wheel radial outside portion 11b of driving pulley 5, but due to the frictional force born at each element 40 of side, large footpath less, therefore metal tape 7 can not skid.
According to the stepless speed variator 1 of element 40 employing present embodiment, when metal tape 7 is wound in belt wheel 5,8 with path, the belt wheel radial inside portion 11a as tilt fixing inclination bus part of belt wheel 5,8 contacts with the V face 46 of the lateral margin of the main part 44 containing projection piece 48, and element 40 and belt wheel 5,8 become more large-scale linear contact lay state.
In addition, when metal tape 7 is wound in belt wheel 5,8 with large footpath, the band radial inside portion 46a as the belt wheel radial outside portion 11b with the lateral margin as projection piece 48 that bend bus part of belt wheel 5,8 contacts, and two projection pieces 48 are clamped and (inside the axial direction of belt wheel 5,8) flexure inside width direction by belt wheel 5,8.
Therefore, can by comprising the linear contact lay in the wider scope of projection piece 48, prevent the reduction of the friction factor when metal tape 7 is wound in belt wheel 5,8 with path, further, the deterioration of the belt wheel 5,8 that can prevent the high surface pressure because producing when point cantact from causing by linear contact lay and the durability of element 40.
In addition, when metal tape 7 is wound in belt wheel 5,8 with large footpath, the lateral margin outside the width direction of projection piece 48 while flexure with the contacting as the belt wheel radial outside portion 11b bending bus part of belt wheel 5,8.Thus, the area of contact between element 40 with belt wheel 5,8 becomes larger, thus can obtain larger frictional force.
In addition, the width w of the band radial outside end of projection piece 48 is set to the width of the regulation of the flexure allowing projection piece, and, identical width is set as to band radially inner side end, or be formed as broadening gradually along with towards band radially inner side width, make the width W of band radially inner side end become W≤w.Thereby, it is possible to easily form the projection piece 48 of deflection, and, if broadened gradually along with towards band radially inner side width, then can improve the durability of projection piece 48 further.
In addition, when the metal tape 7 being wound in belt wheel 5,8 is for path, the lateral margin of element 40 and the belt wheel radial inside portion 11a linear contact lay of belt wheel 5,8.Now, become Liquid Lubrication Condition when the lubricant oil between element 40 and belt wheel 5,8 does not discharge rightly, metal tape 7 becomes easy skidding.
In this case, if at part, the oil-discharge trough 47 being namely with the lateral margin outside the width direction of radial outside portion 46b and projection piece 48 to be formed with the thickness of slab direction along element 40 to extend of the rectilinear form of the radial outside of the lateral margin of element 40, then the lubricant oil between element 40 and belt wheel 5,8 can be discharged (bleeding off) rightly from oil-discharge trough 47, thus the skidding of metal tape 7 can be prevented.
Next, with reference to Fig. 6, the metal tape element 40 of the 2nd mode of execution of the present invention is described.The metal tape element 40 of the 2nd mode of execution, except being except curved shape this point outside the width direction of its projection piece 48, is configured to identical with the 1st mode of execution.
The radius of curvature r of the curved shape of projection piece 48 be set to belt wheel 5,8 as bend bus part belt wheel radial outside portion 11b radius of curvature R more than (R≤r).Thus, when metal tape 7 is wound in belt wheel 5,8 with large footpath, projection piece 48 bends inside width direction, and the band radial inside portion 46a of the lateral margin of projection piece 48 can contact with the belt wheel radial outside portion 11b of belt wheel 5,8 in wider scope.Therefore, according to the metal tape element 40 of the 2nd mode of execution, even if when metal tape 7 is wound in belt wheel 5,8 with large footpath, also larger frictional force can be obtained.
Label declaration
1: variable v-belt drive; 2: transmission input shaft; 3: lay shaft; 4: metal tape mechanism; 5: driving pulley; 5A: fixed side pulley half; 5B: drawer at movable side pulley half; 5C: pulley groove; 6: driving side cylinder room; 7: metal tape; 8: driven pulley; 8A: fixed side pulley half; 8B: drawer at movable side pulley half; 8C: pulley groove; 9: slave end cylinder room; 10: flywheel vibration absorber; 11:V face; 11a: belt wheel radial inside portion (tilt fixing inclination bus part); 11b: belt wheel radial outside portion (bending bus part); 21: sun gear; 22: planet carrier; 22a: small gear; 23: gear ring; 24: forward clutch; 25: retrogressing break; 26: start clutch; 27a, 27b, 28a, 28b: gear; 29: box of tricks, 30: oil pressure pump, 30c, 30d, 30e: oil circuit; 40: element; 41: head; 41a: nostril; 41b: nose; 42: ear; 43: neck; 44: main part; 44a: locking edge edge; 45: saddle face; 46:V face; 46a: band radial inside portion (curved shape); 46b: band radial outside portion (rectilinear form); 47: oil-discharge trough; 48: projection piece; 50: ring; 60: speed change control valve; 70: control unit; 71: driving side revolution detector; 72: slave end revolution detector; Ca: shell; C
dR, C
dN: speed change control signal; ENG: motor; PGS: planetary gears; Ne: engine rotational speed signal; T
h: engine air throttle opening amount signal; V: vehicle speed signal; N
dR: driving pulley rotation signal; N
dN: driven pulley rotation signal.
Claims (5)
1. a metal tape element for variable v-belt drive, it is used to the element of the band of following variable v-belt drive, and described variable v-belt drive possesses:
Driving pulley and driven pulley, they have the pulley groove limited by fixed side pulley half and drawer at movable side pulley half respectively; And
Band, it has element, and is wound in the pulley groove of this driving pulley and this driven pulley,
Described fixed side pulley half is formed with tilt fixing inclination bus part with the surface of contact contacted with described element of at least described fixed side pulley half in described drawer at movable side pulley half at its radially inner side, the bus of this tilt fixing inclination bus part to tilt fixing angle towards the mode that radial outside broadens with described pulley groove
The radial outside of described surface of contact is formed with bending bus part, the bus of this bending bus part to broaden gradually towards pulley groove described in radial outside and angle of inclination becomes large mode gradually bends,
Leave from the described fixed side pulley half of the belt wheel of this side by making the described drawer at movable side pulley half of the belt wheel of the side in described driving pulley and described driven pulley, the width of the pulley groove of this side is increased, by making the described drawer at movable side pulley half of the belt wheel of the opposing party in described driving pulley and described driven pulley close to the described fixed side pulley half of the belt wheel of this opposing party, the width of the pulley groove of this opposing party is reduced, thus change gear ratio
The feature of described metal tape element is,
Be formed with the locking edge edge contacted with adjacent element on the element,
Radial outside as the described band of the lateral margin of described element is formed as rectilinear form in the mode of the tilt fixing inclination bus wire portion line contact with described belt wheel,
Be respectively arranged with projection piece at the both side edges subordinate end of described element, described projection piece than described locking edge edge on the lower, and extends towards the inner side that band is radial,
When the bending bus part contact of the radial outside of described element and described belt wheel, this projection piece bends inside the axial direction of described belt wheel.
2. the metal tape element of variable v-belt drive according to claim 1, is characterized in that,
The width of the band radial outside end of described projection piece is set to the width of the regulation of the flexure allowing described projection piece, and described projection piece is formed as becoming large gradually along with towards band radially inner side width.
3. the metal tape element of variable v-belt drive according to claim 1, is characterized in that,
Lateral margin outside the width direction of described projection piece is the rectilinear form of the elongation line of the rectilinear form of lateral margin along described element.
4. the metal tape element of variable v-belt drive according to claim 1, is characterized in that,
Lateral margin outside the width direction of described projection piece is the curved shape caved in inside width direction.
5. the metal tape element of variable v-belt drive according to claim 4, is characterized in that,
The radius of curvature of described curved shape is more than the radius of curvature of bending bus part of described belt wheel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012152692 | 2012-07-06 | ||
| JP2012-152692 | 2012-07-06 | ||
| PCT/JP2013/063572 WO2014006984A1 (en) | 2012-07-06 | 2013-05-15 | Element for metallic belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104334918A true CN104334918A (en) | 2015-02-04 |
| CN104334918B CN104334918B (en) | 2016-09-21 |
Family
ID=49881745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380029179.7A Active CN104334918B (en) | 2012-07-06 | 2013-05-15 | Metal tape element |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9556931B2 (en) |
| JP (1) | JP5877900B2 (en) |
| CN (1) | CN104334918B (en) |
| DE (1) | DE112013003466T5 (en) |
| WO (1) | WO2014006984A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352034A (en) * | 2015-07-16 | 2017-01-25 | 本田技研工业株式会社 | Belt type continuously variable transmitter |
| CN113108033A (en) * | 2020-01-09 | 2021-07-13 | 本田技研工业株式会社 | Belt type continuously variable transmission and method of manufacturing the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110337552B (en) * | 2017-03-03 | 2021-01-15 | 爱信艾达株式会社 | Method for designing single body of transmission belt and transmission belt |
| JP6747377B2 (en) * | 2017-05-16 | 2020-08-26 | アイシン・エィ・ダブリュ株式会社 | Continuously variable transmission and transmission belt |
| JP6809368B2 (en) * | 2017-05-16 | 2021-01-06 | アイシン・エィ・ダブリュ株式会社 | Continuously variable transmission and transmission belt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62131143U (en) * | 1986-02-12 | 1987-08-19 | ||
| JPH01312247A (en) * | 1988-01-11 | 1989-12-18 | Sa Pneum Caoutch Manuf Plastiques | Gearing with extrusion type lateral link for continuous transmission |
| JP2002031215A (en) * | 2000-07-11 | 2002-01-31 | Nissan Motor Co Ltd | Belt-type cvt pulley and v-belt for pulley |
| JP2011106667A (en) * | 2009-10-21 | 2011-06-02 | Yamaha Motor Co Ltd | Continuously variable transmission and saddle ride-type vehicle |
| CN202228616U (en) * | 2011-09-01 | 2012-05-23 | 于海龙 | Metal belt type continuously variable transmission |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63297850A (en) | 1987-05-29 | 1988-12-05 | Aichi Mach Ind Co Ltd | Pulley of v-belt type continuously variable transmission |
| JP3186894B2 (en) | 1993-04-19 | 2001-07-11 | 日産自動車株式会社 | V-belt type continuously variable transmission |
| WO2010125876A1 (en) * | 2009-04-27 | 2010-11-04 | 本田技研工業株式会社 | Method for manufacturing element for belt of continuously variable transmission |
| US9103412B2 (en) | 2011-09-28 | 2015-08-11 | Honda Motor Co., Ltd. | Endless power transmission belt-type continuously variable transmission |
-
2013
- 2013-05-15 CN CN201380029179.7A patent/CN104334918B/en active Active
- 2013-05-15 JP JP2014523636A patent/JP5877900B2/en active Active
- 2013-05-15 DE DE112013003466.2T patent/DE112013003466T5/en not_active Withdrawn
- 2013-05-15 US US14/399,262 patent/US9556931B2/en active Active
- 2013-05-15 WO PCT/JP2013/063572 patent/WO2014006984A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62131143U (en) * | 1986-02-12 | 1987-08-19 | ||
| JPH01312247A (en) * | 1988-01-11 | 1989-12-18 | Sa Pneum Caoutch Manuf Plastiques | Gearing with extrusion type lateral link for continuous transmission |
| JP2002031215A (en) * | 2000-07-11 | 2002-01-31 | Nissan Motor Co Ltd | Belt-type cvt pulley and v-belt for pulley |
| JP2011106667A (en) * | 2009-10-21 | 2011-06-02 | Yamaha Motor Co Ltd | Continuously variable transmission and saddle ride-type vehicle |
| CN202228616U (en) * | 2011-09-01 | 2012-05-23 | 于海龙 | Metal belt type continuously variable transmission |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352034A (en) * | 2015-07-16 | 2017-01-25 | 本田技研工业株式会社 | Belt type continuously variable transmitter |
| CN106352034B (en) * | 2015-07-16 | 2018-11-02 | 本田技研工业株式会社 | Variable v-belt drive |
| CN113108033A (en) * | 2020-01-09 | 2021-07-13 | 本田技研工业株式会社 | Belt type continuously variable transmission and method of manufacturing the same |
| CN113108033B (en) * | 2020-01-09 | 2023-11-21 | 本田技研工业株式会社 | Method for manufacturing belt type continuously variable transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5877900B2 (en) | 2016-03-08 |
| CN104334918B (en) | 2016-09-21 |
| DE112013003466T5 (en) | 2015-03-26 |
| US20150080157A1 (en) | 2015-03-19 |
| US9556931B2 (en) | 2017-01-31 |
| JPWO2014006984A1 (en) | 2016-06-02 |
| WO2014006984A1 (en) | 2014-01-09 |
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